Place of Publication
Succulenta (Netherlands) 39(1): 2 (1960)
References
-
Ritter (1960b)
Ritter, F. 1960. Pyrrhocactus marksianus Ritter spec. nova. Succulenta (Netherlands) 39(1):2-3
Pyrrhocactus marksianus
Eriosyce curvispina
(Bertero ex Colla) Katt.
subsp.
marksiana
Succulenta (Netherlands) 39(1): 2 (1960)
Ritter, F. 1960. Pyrrhocactus marksianus Ritter spec. nova. Succulenta (Netherlands) 39(1):2-3